Include Oxygen cyclic compounds

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7.Include Oxygen cyclic compounds

No.	Product Name (Chemical Substance Name)	CAS No.	Structure Formula
1	Tetrahydro-4H-pyran-4-one	29943-42-8 CSCL No. 5-5761 ISHL No. -
2	2,5-Dimethoxy Tetrahydrofulan	696-59-3 CSCL No. 5-54 ISHL No. -
3	4,5-Dimethyl-2-oxo-1,3-dioxolene	37830-90-3 CSCL No. - ISHL No. -
4	3,4-Dimethoxy dioxyaniline	14288-66-7 CSCL No. - ISHL No. -
5	1,8-Dinaphthalene dicarboxylic acid anhydride	81-84-5 CSCL No. 4-404 ISHL No. -
6	3,4-Dihydro-2H-pyran	110-87-2 CSCL No. 5-0670 ISHL No. -

*CSCL No. : Chemical Substances Control Law No.
*ISHL No. : Industrial Safety and Health Law No.